php实现session入库操作例子

<?php
ini_set("session.save_handler","user");
//session.gc_probability = 1 分子
ini_set("session.gc_probability",1);
//session.gc_divisor = 1000 分母
ini_set("session.gc_divisor",2);
//session.gc_maxlifetime = 1440 垃圾回收时间，session有效期
 
session_set_save_handler( "open","close","read","write","destroy","gc" );
 
//连接数据库
function open($savePath,$sessionName){
    mysql_connect("localhost","root","root");
    mysql_select_db("test");
    mysql_query("set names utf8");
}
function close(){
    echo "close<br>";
}
function read($sessionId){
    $sql = "select * from session where sessionid='".$sessionId."'";
    $re = mysql_query($sql);
    $sessdata = mysql_fetch_assoc($re);
     
    //返回session存储的数据
    return $sessdata["sessiondata"];
}
function write($sessionId,$data){
     
    //如果sessionid不存在，插入新纪录，存在就更新
    /*$sql = "select * from session where sessionid='".$sessionId."'";
    $re = mysql_query($sql);
    if(mysql_num_rows($re) > 0){
        $sql = "update session set sessiondata='".$data."' where sessionid='".$sessionId."'";
    }else{
        $sql = "insert into session(sessionid,sessiondata,sessiontime) values('".$sessionId."','".$data."',".time().")";
     
    }
    if(!mysql_query($sql)){
        echo mysql_error();
    }else{
        return true;
    }
    */
     
    //用replace语法解决上述操作
    $sql = "replace into session(sessionid,sessiondata,sessiontime) values('".$sessionId."','".$data."',".time().")";
    if(!mysql_query($sql)){
        echo mysql_error();
    }else{
        return true;
    }
 
}
 
//根据sessionid销毁当前的session
function destroy($sessionId){
    echo "destroy<br>";
}
 
//删除过期的所有session
function gc($lifetime){
    echo "gc<br>";
}
 
 
session_start();
 
$_SESSION["vvvv"] = "eeee";
var_dump($_SESSION);
?>

$mail->Host       = 'smtp.exmail.qq.com';      // SMTP 服务器
$mail->Port       = 25;   // SMTP服务器的端口号
$mail->Username   = 'admin@xxx.com';  // SMTP服务器用户名
$mail->Password   = 'password';            // SMTP服务器密码
$mail->SetFrom('admin@xxx.com','Status');
$mail->AddReplyTo('admin@xxx.com','Status');
$mail->Subject    = $subject;
$mail->AltBody    = 'To view the message, please use an HTML compatible email viewer!'; // optional, comment out and test
$mail->MsgHTML($body);
$address = 'admin@admin.com';   //接收邮箱

$server_ip_list = array(
'61.135.169.121',
'221.204.173.200',
'173.194.127.83'
);

<?php
/*
 * 服务器状态监控

 */
header('Content-type:text/html;charset=utf-8');
include './smtp/class.smtp.php';
include './smtp/class.phpmailer.php';
function sendmail($subject = '',$body = '') {
    date_default_timezone_set('Asia/Shanghai');//设定时区东八区
    $mail             = new PHPMailer(); //new一个PHPMailer对象出来
    // $body            = eregi_replace("[]",'',$body); //对邮件内容进行必要的过滤
    $mail->CharSet ="UTF-8";//设定邮件编码，默认ISO-8859-1，如果发中文此项必须设置，否则乱码
    $mail->IsSMTP(); // 设定使用SMTP服务
    $mail->SMTPAuth   = true;                  // 启用 SMTP 验证功能
    $mail->Host       = 'smtp.exmail.qq.com';      // SMTP 服务器
    $mail->Port       = 25;   // SMTP服务器的端口号
    $mail->Username   = 'admin@xxx.com';  // SMTP服务器用户名
    $mail->Password   = 'password';            // SMTP服务器密码
    $mail->SetFrom('admin@xxx.com','Status');
    $mail->AddReplyTo('admin@xxx.com','Status');
    $mail->Subject    = $subject;
    $mail->AltBody    = 'To view the message, please use an HTML compatible email viewer!'; // optional, comment out and test
    $mail->MsgHTML($body);
    $address = 'admin@admin.com'; //接收邮箱
    $mail->AddAddress($address, '');
    //$mail->AddAttachment("images/phpmailer.gif");      // attachment  附件
    //$mail->AddAttachment("images/phpmailer_mini.gif"); // attachment
    if(!$mail->Send()) {
        echo 'Mailer Error: ' . $mail->ErrorInfo;
    } else {
         // echo "Message sent!恭喜，邮件发送成功！";
    }
}
//check server status
function checkServerSatatus($ip) {
 $str = null;
 $fp = @fsockopen($ip,80,$errno,$errstr,10);

 if (!$fp) {
  return false;
 } else {
  fclose($fp);
  return true;
 }
}
$server_ip_list = array(
       '61.135.169.121',
       '221.204.173.200',
       '173.194.127.83'
      );
?>
<!doctype html>
<html lang="zh_CN">
<head>
 <meta charset="UTF-8">
 <title>服务器状态监控</title>
 <style>
 * {
  margin: 0px;
  padding: 0px;
 }
 body {
  font-family: "Microsoft yahei",Arial;
  font-size:14px;
 }
 header {
  height: 40px;
  background-color: #2e2e2e;
  width: 100%;
  line-height: 35px;
 }
 header > h3 {
  color: #fff;
  margin-left: 20px;
 }
 footer {
  text-align: center;
 }
 a {
  color: #424242;
  text-decoration: none;
 }
 .wrap {
  height: auto;
  zoom:1;
  overflow: auto;
  max-width: 500px;
  width: 100%;
  margin: 50px auto;
 }
 .table {
  border-collapse: collapse;
  border: 1px solid #eee;
  width: 100%;
 }
 tr,td{
  color: #424242;
  border-collapse: collapse;
  border: 1px solid #F0F0F0;
  height: 30px;
  text-align: center;
 }
 tr:nth-child(2n+1) {
  background-color: #F7F8FC;
 }
 tr:hover {
  background-color: #F7F8FC;
 }
 .online,.offline {
  height: 20px;
  background-color: #2ECC71;
  width: 40px;
  margin: 0px auto;
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  border-radius: 5px;
  color: #fff;
 }
 .offline {
  width: 50px;
  background-color: #E74C3C;
 }
 </style>
</head>
<body>
 <header>
  <h3>服务器在线状态监控</h3>
 </header>
 <div class="wrap">
  <table class="table">
   <tbody>
    <tr><td>ID</td><td>Location</td><td>Address</td><td>Status</td></tr>
    <?php
     $i = 0;
     foreach ($server_ip_list as $key => $val) {
      $api = file_get_contents('http://ip.taobao.com/service/getIpInfo.php?ip='.$server_ip_list[$key].'');
      $json = json_decode($api);
      $result = $json->data;

      $i++;
      if (checkServerSatatus($server_ip_list[$key])) {
       echo "<tr><td>{$i}</td><td>{$result->country}{$result->region}{$result->city}</td><td>{$server_ip_list[$key]}</td><td><div class="online">在线</div></td></tr>";
      } else {
       echo "<tr><td>{$i}</td><td>{$result->country}{$result->region}{$result->city}</td><td>{$server_ip_list[$key]}</td><td><div class="offline">不在线</div></td></tr>";
       $subject = "您的服务器 {$server_ip_list[$key]} 无法访问！";
       $body = "您的服务器{$server_ip_list[$key]} 无法访问，此邮件根据你设置的监控频率发送，当服务器恢复正常邮件自动停止发送！";
       sendmail($subject,$body);
      }
     }

     ?>
   </tbody>
  </table>
 </div>
 
</body>
</html>